librenms-librenms/includes/html/graphs/application/pi-hole_blocklist.inc.php

<?php

require 'includes/html/graphs/common.inc.php';

$scale_min = 0;
$colours = 'mixed';
$unit_text = 'Stats';
$unitlen = 6;
$bigdescrlen = 25;
$smalldescrlen = 25;
$dostack = 0;
$printtotal = 0;
$addarea = 1;
$transparency = 33;
$rrd_filename = Rrd::name($device['hostname'], ['app', $app->app_type, $app->app_id]);

$array = [
    'domains_blocked' => ['descr' => 'Blocked domains', 'colour' => '000000'],
];

$i = 0;

if (Rrd::checkRrdExists($rrd_filename)) {
    foreach ($array as $ds => $var) {
        $rrd_list[$i]['filename'] = $rrd_filename;
        $rrd_list[$i]['descr'] = $var['descr'];
        $rrd_list[$i]['ds'] = $ds;
        $rrd_list[$i]['colour'] = $var['colour'];
        $i++;
    }
} else {
    echo "file missing: $rrd_filename";
}

require 'includes/html/graphs/generic_v3_multiline_float.inc.php';